With some triangles it can be tricky to know the value of the trigonometric function. This is not the case with some very special triangles. The 30-60-90 triangle and the 45-45-90 triangle. These two triangles have some nice ratios that allow us to find values like sin(30) very quickly. This video shows how to use those triangles. For more videos please visit http://www.mysecretmathtutor.com
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